package com.young.mylib.view;

import android.app.AlertDialog;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.DatePicker;


import com.young.mylib.R;

import java.util.Calendar;

/**
 * Created by Young on 2018/3/24.
 */


public class MyDatePickerDialog extends AlertDialog implements
        DatePicker.OnDateChangedListener {

    private static final String YEAR = "year";
    private static final String MONTH = "month";
    private static final String DAY = "day";

    private final DatePicker mDatePicker;
    private final OnDateSetListener mDateSetListener;
    private final Calendar mCalendar;

    private boolean mTitleNeedsUpdate = true;

    private View view;

    /**
     * The callback used to indicate the user is done filling in the date.
     */
    public interface OnDateSetListener {

        /**
         * @param view        The view associated with this listener.
         * @param year        The year that was set.
         * @param monthOfYear The month that was set (0-11) for compatibility
         *                    with {@link Calendar}.
         * @param dayOfMonth  The day of the month that was set.
         */
        void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth);
    }

    /**
     * @param context     The context the dialog is to run in.
     * @param callBack    How the parent is notified that the date is set.
     * @param year        The initial year of the dialog.
     * @param monthOfYear The initial month of the dialog.
     * @param dayOfMonth  The initial day of the dialog.
     */
    public MyDatePickerDialog(Context context,
                              OnDateSetListener callBack,
                              int year,
                              int monthOfYear,
                              int dayOfMonth) {
        this(context, 0, callBack, year, monthOfYear, dayOfMonth);
    }

    /**
     * @param context     The context the dialog is to run in.
     * @param theme       the theme to apply to this dialog
     * @param listener    How the parent is notified that the date is set.
     * @param year        The initial year of the dialog.
     * @param monthOfYear The initial month of the dialog.
     * @param dayOfMonth  The initial day of the dialog.
     */
    public MyDatePickerDialog(Context context, int theme, OnDateSetListener listener, int year,
                              int monthOfYear, int dayOfMonth) {
        super(context, theme);

        mDateSetListener = listener;
        mCalendar = Calendar.getInstance();

        Context themeContext = getContext();
        LayoutInflater inflater = LayoutInflater.from(themeContext);
        view = inflater.inflate(R.layout.date_picker_dialog, null);
        //view.setBackgroundColor(context.getResources().getColor(R.color.bg_commom));
        view.setBackgroundColor(Color.WHITE);
        //setView(view);


//        setButton(BUTTON_POSITIVE, themeContext.getString(R.string.ok), this);
//        setButton(BUTTON_NEGATIVE, themeContext.getString(R.string.cancel), this);
//        setButtonPanelLayoutHint(LAYOUT_HINT_SIDE);

        mDatePicker = (DatePicker) view.findViewById(R.id.datePicker);
        mDatePicker.init(year, monthOfYear, dayOfMonth, this);
        //  mDatePicker.setValidationCallback(mValidationCallback);
        //实现自己的标题和ok按钮
        //   setTitle("Select date:");
        setButton();
    }

    //    private void setTitle(String title) {
//    //获取自己定义的title布局并赋值。
//        ((TextView) view.findViewById(R.id.date_picker_title)).setText(title);
//    }
    private void setButton() {
//获取自己定义的响应按钮并设置监听，直接调用构造时传进来的CallBack接口（为了省劲，没有自己写接口，直接用之前本类定义好的）同时关闭对话框。
        view.findViewById(R.id.date_picker_ok).setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (mDateSetListener != null) {
                            // Clearing focus forces the dialog to commit any pending
                            // changes, e.g. typed text in a NumberPicker.
                            mDatePicker.clearFocus();
                            mDateSetListener.onDateSet(mDatePicker, mDatePicker.getYear(),
                                    mDatePicker.getMonth(), mDatePicker.getDayOfMonth());
                        }
                        dismiss();
                    }
                });
        view.findViewById(R.id.date_picker_cancle).setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        cancel();
                    }
                });
    }

    public void myShow() {
        //自己实现show方法，主要是为了把setContentView方法放到show方法后面，否则会报错。
        show();
        setContentView(view);
    }

    @Override
    public void onDateChanged(DatePicker view, int year, int month, int day) {
        mDatePicker.init(year, month, day, this);

    }


    /**
     * Gets the {@link DatePicker} contained in this dialog.
     *
     * @return The calendar view.
     */
    public DatePicker getDatePicker() {
        return mDatePicker;
    }

    /**
     * Sets the current date.
     *
     * @param year        The date year.
     * @param monthOfYear The date month.
     * @param dayOfMonth  The date day of month.
     */
    public void updateDate(int year, int monthOfYear, int dayOfMonth) {
        mDatePicker.updateDate(year, monthOfYear, dayOfMonth);
    }


    @Override
    public Bundle onSaveInstanceState() {
        final Bundle state = super.onSaveInstanceState();
        state.putInt(YEAR, mDatePicker.getYear());
        state.putInt(MONTH, mDatePicker.getMonth());
        state.putInt(DAY, mDatePicker.getDayOfMonth());
        return state;
    }

    @Override
    public void onRestoreInstanceState(Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        final int year = savedInstanceState.getInt(YEAR);
        final int month = savedInstanceState.getInt(MONTH);
        final int day = savedInstanceState.getInt(DAY);
        mDatePicker.init(year, month, day, this);
    }

    public void setTag(String tag) {
        this.setTag(tag);
    }

}